Harrow attachment.



No. 856,916. .PATENTED JUNE 11, 1907.

. K. SGHAAL.

HARROW ATTACHMENT.

APPLICATION FILED SEPT. 19. 1906.

"UNITED STATES PATENT OFFICE.

HARROW ATTACHMENT.

Specification of Letters Patent.

Patented June 11, 1907.

Application filed September 19, 1906. Serial No. 335,801.

a T all whom/ it may concern:

Be it known that I, KARL SCHAAL, a citizen of the United States ofAmerica, residing at Seward, in the county of Seward and State ofNebraska, have invented new and useful Improvements in HarrowAttachments, of which the following is a specification.

This invention relates to harrow attachments and one of the principalobjects of the same is to provide means for attaching a harrow to anordinary plow which will not interfere with the turning of the furrowslice.

Another object of the invention is to provide means for attaching aharrow to a plow which will not interfere with the tilting or rockingmovements of the harrow as it is drawn over the ground at the mold boardside of the plow.

Another object of my invention is to provide simple braces and clampsfor connection to a plow and to a harrow which can be quickly detachedfrom either the harrow or the plow or, both so that either implement maybe used independently of the other.

The foregoing and other objects may be attained by means of theconstruction illustrated in the accompanying drawings, in which:

Figure 1 is a perspective view of a plow and harrow connected togetherby means constructed in accordance with my invention. Fig. 2 is aperspective view of a clevis connected to the front bar of the harrow.Fig. 3 is a perspective view of a link pivotally connected to the clevisand to a brace leading from the plow. Fig. 4 is a perspective view of atwo-part clamp for connecting the two braces together.

Referring to the accompanying drawings for a more particular descriptionof my invention, the numeral 1 designates the beam of an ordinary plowand 2 is the mold board thereof. Connected to the rear end of the beam 1is a bracket 3 which may be of any suitable shape to conform to theshape of the beam of the plow. The harrow 4 and the plow may be of theordinary or of any suitable construction. The harrow shown is providedwith a series of tooth-bars 5 connected together by longitudinal bars 6and adapted to be rocked to throw the teeth into l a vertical, operativeposition or in a position to drag upon the ground by means of the lever7 and rack 8. To the front bar 5 of the harrow, a clevis 9 is connected,said clevis consisting of a metal strap encircling the bar 5 andprovided with forwardly extending lugs 10 through which a bolt or pin 11is passed to pivotally connect said clevis with a link 12, said linkbeing bifurcated at its forward end and the inner surfaces of thebifurcation being curved, as shown at 13, Fig. 3, to permit the harrowto tilt from side to side when connected to the plow, as willhereinafter appear.

The link 12 is pivoted through the opening 14 to the clevis 9 andthrough the perforation 15 to the lower end of a brace 16 by means ofthe pin or bolt 17. The brace 16 comprises a vertical member 18 to thelower end of which the link 12 is connected and a long, diagonal,horizontal member secured at 20 by suitable bolts to the sides of theplow beam 1. The brace member 19 of the brace 16 is disposed in ahorizontal plane above the mold board 2 so as not to interfere with theturning of the furrow slice. A brace 21. is connected at one end to thebracket 3 secured to the beam of the plow and at its lower end saidbrace is secured between the spaced lugs 22 of a two-part clampcomprising inwardly extending flanges 23 which ongage the verticalmember 18 of the brace 16, as shown .in Fig. 1, and connects said brace16 to the brace 21 by means of a bolt 24.

From the foregoing it will be obvious that the link 12 being pivotallyconnected to the clevis 9 at one end and pivotally connected by the bolt17 to the brace 16, the harrow 4 will be permitted to tilt from side toside owing to the curved surfaces 13 of the arms of said link. It willalso be noted that the only attachment to the plow is the bracket 3 andthat the braces 16 and 21 may be readily disconnected from the plowwhenever it is desired to use the plow independently of the harrow andthat the brace 16 may be readily disconnected from the h arrow wheneverit is desired to use the harrow independently of the plow. Theattachment, as a whole, is, simple in construction, can be quickly attached to any plow or harrow, can be readily detached from either orboth and can be manufactured at slight cost.

Having thus described the invention, what I claim is:

1. A harrow attachment comprising a brace secured to the plow beam andcomprising a horizontal portion and a vertical portion, a clevis securedto the harrow and a link secured to the clevis, said link having abifurcated front end and the inner Walls of said bifurcation beingrounded to permit the harroW to tilt from side to side and a sec ondarybrace secured to the plow beam and connected by a clamp to the firstnamed brace, substantially as described.

2. In a harrow attachment, a clevis connected to the harroW, a linkpivotally connected to the clevis, said link having bifurcationsprovided with curved inner surfaces, substantially as described.

3. In a harroW attachment, tWo braces connected to a plow beam, and atwo-part I 5 clamp for connecting one of said braces to the other, alink pivotally connected to one of said braces and a harrow clevisconnected to said link.

In testimony whereof, I afiiX my signature 20 in presence of tWoWitnesses.

KARL SCHAAL.

Witnesses:

JOHN L. JoRGENsoN, E. JAcoBs.

